Polish gas giant PGNiG is preparing to renegotiate the contract for Qatari gas deliveries, including terms such as price and deliveries schedule, CEO Mariusz Zawisza said on Thursday.

"We are in the middle of very intense preparations to renegotiating the contract for gas deliveries from Qatar," Zawisza said. "I think that within the next two-three months we will have negotiation scenarios ready."

"Negotiations will regard different elements [of the contract] including price, schedule of deliveries or possibilities of making delivery volumes more flexible in the future," the CEO said.